Machine for rectifying electrotypes.



W. W. MGGARROLL.

MACHINE FOR REGTIFYING ELEGTROTYPES.

APPLICATION FILED JAN. 9,.1911.

Patented Sept. 8, 1914.

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W. W. MOCARROLL.

MACHINE FOR REOTIFYING BLEGTROTYPES.

APPLICATION FILED JAN. 9, 1911.

Patented Sept. 8, 1914,

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-tion proceeds.

' drawings in which: a 1

Figure 11s a front elevation of a machine is aiview'looking from theright in Figi l N T D was PATENT OFFICE- WALKER w. 'icoAnnon or AnLiivG'roN, NEW JERSE MACHINE ron nno rrnriive nrno'rno'rrrns.

Specification of Letters l atent. l Pat GH ted Sept. 8, 1914...

Application filed January 9, 1911. SerialNo. 601,585.

- To all whom it may concern Be it' knOWnzthat I, WALKER W. MoCAR- noLL, a vcitizen of the United States, residing in Arlington, county of Hudson, and State of New Jersey, have invented an Improvement in lillachinesfor 'Rectifying Electro types, ofwhich the following is a' speclficatlon; I I .1 i a 1 This invention relates to machinesfor rec- F tlfying electrotypes and has partlcular ref-- erence'fto improvements in g the hammer mechanism .ofzsaid machines.

Machmes for rectifying electrotype plates are known to the art andcomprise generally a bed plate uponwhich the electrotypeplate a rests durin the 0 eration. a hammer mechanism for delivering blows upon the back of theplate at suchplaces which require rais ing, that is, rectifying to produce a perfect impression, and a suitable abutment sus pended above the bed plate andadapted to be pressed down on thelatter to furnish the necessary resistance against the operation of the hammer. This'latter operates on suitable tools located in the bed plateand which are adapted to be brought into suitable position with respect to the hammer, the pos1- tionof which is fixed. Between eachblow the abutment member is raised to permit the operator to adjust theelectrotype toreceive the blows ofthe hammerin the proper places. i V It isone of the objects of thlslnvention to improve upon the construction and:de-'

sign of the machine so as to enlarge and'in T crease 'itsusefulnessand to enablethe operator to give his entire. attention to thework [of rectifying by providing suitable automatic mechanisms tending to. relieve the operator of the necessity'of constant atten- 1? tion to the operating parts. 7

Other objects of the invention are to cure the existing-machines of various errors inherent 1n their construction.

Other ob ectsw1ll appearas thls speclfica- Tothis end the invention is-embodied in a machine for reetlfylngele'ctrotypes such as set forth in theffollowin'g specification while reference is had to'the accompanying embodying my invention. Fig. 2 is a detail view ofmeans for causing the abutment to operate in a hammer-like manner Fig. 3

with parts in sectionand parts omitted. F1g14 -isa detail sectional view of the tool holder and the abutment above the same.- Flg. 5 showsamodified construction of the,

abutment. Fig. 6 is a detail view of parts of the abutment operating mechanism and 1 Fig. 7 is adetail view of parts of the means Referring to the drawings the reference numeral 8 represents a'suitab'le frame which 1 carries a level bed plate 9 for the support of ?the electrotype; This latter placed over "the center ofthe bed plate in which there is supported a tool-holder 10 containing various shaped-tools 11' normally heldfiush {With the bed plate by springs 12. The tool ;holder. is rotated by means of a gear 13.

A detailed description of the tools and the- {tool holder isnot necessary as the same are 'not new; sufiicient for this disclosure is it to say that the tools are preferablyarranged in a circle sothat b-y'rotation any one of cam 18 which engages a small roller 19 on the hammer release 20. A collar 2l is fast on the bar 17 and adapted to engage the collar 16 aforesaid to compress the spring 15 for adjusting the operation of the hammer.-

of the spring acts against a colto operate the hammer.- A spring 22 keeps l the bar 17 in engagement with the roller 19. Thenbar '1s reciprocated by means; of aneccentric 23 fast on the driving shaft 24 to l. which power may be'applied by anyv suit able means; It will be understood that during operation the vertical bar 17.is con-.

tinuously,reciprocated. The cam 18 sliding along the roller 19 keeps the collar 21 from engaging the collar: 16 and the hammer remalns statlonary. -When, however, the hammer'rele'ase 20 is pulled down a certain distance, the spring 22 pulls the bar to the right and the collar 21 catches the col'-' lar 16 andbompressesthe spring l5 until' the cam- 18 again engages the roller 20.

Thereby" the bar 17 again pushed to the left,' the collars are disengaged and the liammer is thrown strongly upward by the s ring 15 and able-Wis delivered on the tool immediately above the hammer; The

farther down the hammer release is moved the longer the collars are in engagement and the stronger is the blow.

The hammer release is operated by means of a treadle 25 actuated by'a pivoted foot piece 26. The treadle is loose on a shaft 27 and carries a pin 28 engaging a slot 29 in the rod 30 which carries the-hammer release 20. A spring 31 normally forces the release up ward.

To the shaft 27 there is secured a treadle shoe 32. The shaft may be rotated to adjust the treadle shoe by means of the arm 33 and lever 34. This latter passes through a casing 35 having a pin 36 adapted to engage notches 37 on thelever 34-. A spring seated stop 38 keeps the lever 34 up against the pin 36; 1

Thus the lever 34 may beset with relation to the casing 35, which is fast to the frame 8, andhence the treadle shoe may be adjusted into given positions away from the treadle, as will be understood. The treadle can only be depressed so far down till it abuts the shoe. By setting the lever 34 in a given position the operator is relieved from'the necessity of constantly watching the treadle to secure the proper kind of a blow. By this means, once the lever .34 is set, the operator simply keeps the trcadle down on the treadle shoe. A spring 39. assists .in moving the treadle upward. i 3

Above the bed plate there is suspended the abutment 40 comprising a frame 41 supported by a ball and socket joint .42 from the vertical shaft 43 which carries a weight 44 and a bevel gear '45 which engages the bevel gear 46 on a shaft 47- ,This latter carries at its outer end a bevel ge'ar148 and a handwheel49. A vertical shaft 50 carries a bevel gear 51 meshing with the gear 48,- and a gear 52 meshing with a gear 53 which latter is in engagement with the tool {holder gear 13 aforesaid. 1

'lhe-abutment frame 41 is formed with a ring 54 to whichis secured a block frame 5.5 by screws 56. j The frame 55 contains a block of glass 57 having marks 58 thereon'correspending to the position of, the tools 11. A gasket is interposed between the frame 55 and ring 54 as shown, and interposed between the latter and the glass block there is e a leveling ring 59 adapted to be adjusted by screws 60. A cushioning member 61in the form of a ring of rubber, fiber or similar material is secured to the frame 55. I

It is of the greatestimportance that the lower surface of the glass block be, perfectly and absolutely level when theqabutment is brought down on the electrotype, or: the

blows on the latter. will spoil it. It is also necessary that the block has suflicient backing against the blew. Hence, whenuthe block is faulty, the leveling rin 59 is, ad-

' i i 5 to level the lower carries two cam rolls 69, 69 between which rotates a cam'68 fast on the driving shaft 24. As the cam rotates the rolls 69 are raised and lowered and the rod 67 reclprocated vertically. The lower end of the rod 67 is of course slotted to permit the shaft 24 to pass through it, as is obvious. A spring 70 adjustable by nuts 71 forces the end 66 upward, and by means of nuts as 7 2 this end of the arm follows the downward movement of the rod 67.

Means are provided whereby the abutment remains stationary until the treadle is depressed even after the power has been ap plied to rotate the driving shaft. To this end there is journaled in the frame 8 a small shaft 73, F igs. 1 and 6, having a cam 74 formed in a recess in said shaft. On the latter, at the point where the cam is, rest-s a stop 7 5. Above the latter there is an adjusting screw 76 carried in the arm 63. Normally the stop is kept upwardly by the cam'as shown in Fig. 6, and this prevents the oscillation of the arm 63. lVhen the cam is turned horizontally the stop 75 drops down thereon and the arm 63 commences to oscillate to reciprocate the abut1nent40. This shaft 73 is rotated to lower the stop 75 by means of a cable 7 7, see Fig. 1, attached to the aforesaid pin 28 in the treadle. The upper end of the cable is attached to a disk 77 secured to the front end of the shaft 73. It will be observed that the depression of the treadle and the pin 23 immediately causes the stop 75 to belowered so that the abutment is ready to cooperate with the.

hammer as soon operated.

From the foregoing description the nor- .mal operation of the machine can be understood and is asfollows: The rotationof the driving shaft 24 operates there ciprocating bar 17 but the other parts of the machine remain stationary. When the operator is ready to work on a plate, the treadle is depressed whereby first the stop 75 is lowered as the hammer release is and the abutment, commences to reciprocate and secondly the hammer release is operated to cause the hammer to act on the tools. The parts are so timed that the abutment is raised slightly after each blow'to permit" the operator to adjust the electrotype between blows." 1

Before commencingto rectifythe electro-T isb type? itis very often necessary. to level the plate by blows on'th e top of the same along theedges thereof. For thisipurpose I provide means for: causing the abutmentto descendsh arply: 1n a hammer-like :manner whilethe normaldownward motion of the abutment 1s m the nature of a pressure ap-' pliedigto counteract the hammerlblows. To

this end I provide the following mechanism; To the rear end of the small shaft 73 is secured a pulley segment 79, seeFig. 2,1to wl'iich is attached a cable -80 securedto a force the catch leftward in Fig. 2; The catch is provided with adOgS L'adapted to engage another dog 85 onthe end of a catch 5 S6 pivoted at 87. Theiarm 63 carries an adjustable screw88 adapted to trip the catch 86 to disengagethedogs 84 and 85 as will beunderstood from the drawing. spring 89*keeps the dog 85 in engagement with'the dog'f84. An'eccentric 90- is provided to depress the catch 86' to disengage the dogsmanuallywhen desired, which is during the normal operation of rectifying, when this device for operating the abutment as a hammer is inoperative, except that the 1eXpan-' sion spring 83 assists inrotating the shaft 73 in a clockwise direction to raise the stop 75, the shaft 7 3' beingrotated in anti clockwise direction by the depression of the treadle.

.When; however, it is desired to operate;

the abutment as a hammer the eccentric; 90s..

is turned as shown in Fig. 2. It will be seen from this figure that the engaged dogs 84; and 85 prevent the rotation of the shaft 7 3 except when the stud 88 is moved down ward by the oscillations of the arm 63 to trip the catch 86 which of course happens when the abutment is up. The moment the dogs are disengaged the shaft 73 is I i turned, by the depression of thetreadle, to

lower the stop 7 5 permitting the abutment to descend with a blow on the electrotype plate. But as soon as the abutment has delivered the blow and again ascends the eX pansion spring 83 forces the catch 84: leftward to engage the catch 85 to again pre vent the immediate descent of the abutment until the releasing screw 88 has caused the disengagement of the dogs.

It will be noted that the hammer action of the abutment only occurs each time the treadle is depressed. When the abutment is I operated as a hammer the treadle is depressed only far enough to release the stop 75,Ibut not far enough to release the hammer. The treadle shoe being set accordingly. The ring 61 prevents injury to the glass block which may be caused as the abutment descends immediately after the depression of the treadle. To prevent'a sudden downward motion of the abutment there is provided on the cable 77 a collar seen only in Fig. 1, which; is adapted to engage a 5 forked member 93 adjustably carried by the i IThefirst downward motion of the abut- 1 ment occurs simultaneously with a leftward gmovement ofthe collar 92 on the cable 77 gwhen theitreadle'is depressed as understood, }but the fork 93 isso adjusted that it prie- Qvents the passage ofthe collar92until the }second downward oscillation of the right ien'dof the arm 63,. when the collari92'will @clescending the second time. In other words,

flthe first descending movementofsthe abut- Qment is not effective butzthe shaft 7 3 is permitted to be turned completely first to free fthe stop 75, y 7 l a In order to rcmovethedust caused by the .fprocess of rectifying, I provide a semi-cirgcular blow pip e 94e supplied from ea suitable jpump', not shown, and suitably secured to 'gthe frame a slight distance above the bed gplate to permit the electrotype plate to be imoved" under the pipe, which "latter is progvidedw-ith' aperturesf95, Fig; 3, through iwhich a blast is directed over. the electrotype to remove the dust.

I The above is thought to fully explain this invention and the operation thereof, the main advantages of which are that thereby a separate operation of the abutment as a hammer and a more nearly automatic operw ation of the whole machine is made possible, hence a more perfect rectifying of the electrotype plates.

The invention is susceptible of changes in the details and I claim all such as properly come within the legitimate scope of the invention as set forth in the claims. Therefore I claim:

1. The combination of a bed plate for supporting an electrotype plate, tools in said bed plate, a hammer for operating on the said tools, an abutment supported above the. latter, means for operating said hammer and abutment in unison to rectify the said electrotype plate and means for operating said abutment independent of the a v operation of the said hammer.

2'. In a machine of the character described the combination of a bed plate for support ing an electrotype, tools in said plate, a hammer below said tools, means for operating said hammer, an abutment above the tools, means for operating said abutment. a treadle for actuating both of' the said operating means, a treadle shoe and means for adjusting the latter to limit the-moveinent of the said treadle.

3. (In a machine of the character described the combination of a bed plate for supporting an electrotype, means for operating on the latter to rectify the same, a treadle for actuating the said means, atreadle shoe for hammer and ayielding member secured to 00 31650111115 patent niay be obtained for the abutment for cushioning the latter as the same is pressed against the said electrotype..-,

5. In a machine of the character described the combination of a bed plate for supporting an electrotype, a hammer, means for operating the latter to rectify the said electrotype, an abutment for exercising a pres sure against the operation of the said hammer and a ring contained Within the said abutment and means for adjusting the said ring to level the lower surface of the abutment.' 7 i 6. In a machine of the character described the combination ofa' bed platej for supportingian electrotype, a hammer, means for operating the same to rectify the said electrotype, an abutment supported above said bed plate, said abutment comprising a frame,

a glass block in said frame, adjustable means forleveling the lower surface of the said glass block, means for reciprocating said abutment, a treadle for actuating both of the said operating means, a treadle shoe and means for adjusting the latter to limit the movementsof the said treadle.

17..The combination of a bed plate for supporting an electrotype, a movable abutment supported above the said bed plate, a lever for reciprocating said abutment, a member for keeping said lever immovable, a

rotatable cam for supporting the said member, means for normally keeping said cam in a given position and means "for rotating the cam to'release the said member and for operating the said lever.

S. In a machine for rectifying electrotype plates the combination of rectifying tools five cents each; by addressin'g 'ithc Commissioner of Patents,

Washingto1i',D. C 

